Siemens Gigaset SX541 WLAN dsl Manual
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Siemens Gigaset SX541 WLAN dsl Manual

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Summary of Contents for Siemens Gigaset SX541 WLAN dsl

  • Page 3: Table Of Contents

    Connecting the Gigaset SX541 WLAN dsl ........
  • Page 4 Contents The User Interface ......48 Launching the User Interface ......... . . 48 The Start Screen .
  • Page 5 Setting up Internet telephony (VoIP) ........104 VoiP Settings .
  • Page 6 Contents Glossary ....... . . 167 Index ........179...

  • Page 7: Safety Precautions

    Safety Precautions Only use the mains adapter (12V 1A DC) that is supplied with the Gigaset SX541 WLAN dsl. Comply with the connection values and ratings when connecting the device to the mains power supply. Protect the device from damp. Never open the device.

  • Page 8: The Gigaset Sx541 Wlan Dsl

    Internet or phone via the Internet at the lowest possible cost, then the Gigaset SX541 WLAN dsl is a convenient and effective solution. You can connect your PC wirelessly to the Gigaset SX541 WLAN dsl and create a wireless local network (WLAN). For network security, wireless transmission can be encrypted using the WPA standard or 64/128-bit WEP.

  • Page 9: Local Networks With Gigaset Products

    Local Networks with Gigaset Products You can use the Siemens Gigaset SX541 WLAN dsl to set up a local network, for example a home network. All the PCs in this network can communicate with each other and have access to the Internet.

  • Page 10: Wired Local Network (Ethernet)

    For older PCs you need to install an Ethernet network card. The PC and the Ethernet LAN socket on the Gigaset SX541 WLAN dsl are connected using an Ether- net cable (CAT5). One is supplied. You can obtain additional Ethernet cables from your retailer.

  • Page 11: Wireless Local Network (Wlan)

    Gigaset SX541 WLAN dsl. The stations in the network always communicate via this access point in infrastructure mode. Each station that wants to be part of the wireless network must first register with the access point before it can exchange data.
  • Page 12 Gigaset SX541 WLAN dsl in infrastructure mode. The Gigaset SX541 WLAN dsl forwards the data to the Internet via a DSL or cable modem. Data from the Internet flows back to the PC along the same route.

  • Page 13: Linking A Wireless Network (Wlan) To An Ethernet (Lan)

    Wireless local network (WLAN) The Gigaset SX541 WLAN dsl has four Ethernet interfaces (LAN ports). Up to four PCs can be connected directly to these LAN ports. All PCs can access the Internet via the Gigaset SX541 WLAN dsl.

  • Page 14: Internet Telephony And Connecting Analogue Telephones

    The particular type of telephony that is most beneficial for you will depend on your telephony behaviour and on the particular rate offered by your service provider. The Gigaset SX541 WLAN dsl gives you free choice at any time.

  • Page 15: Features And Applications

    Standard IEEE 802.11 b or 802.11g. Using a Gigaset SX541 WLAN dsl makes it easy to set up a network at home or in small offices. For example, users can exchange data or share resources on the net- work, such as a file server or printer.
  • Page 16 Internet connections, which makes them 'invisible' on the Inter- net. The Gigaset SX541 WLAN dsl only allows access from the Internet if it has been requested from the local network. With the firewall the Gigaset SX541 WLAN dsl also offers comprehensive protec- tion against hacker attacks.

  • Page 17: Procedure For Installation And Configuration

    "Configuring the Local Network" on page 21. 4. With a wireless connection you establish the link from the PC's wireless network adapter to the Gigaset SX541 WLAN dsl. This is described in the user guide for the network adapter.

  • Page 18: First Steps

    First Steps First Steps System Requirements To operate your Gigaset SX541 WLAN dsl you need: A PC with – an 802.11g or 802.11b-compatible wireless Note: The maximum data transfer rate for 802.11b-compatible network adapters is 11 Mbps and for 802.11g-compatible network adapters is 54 Mbps.

  • Page 19: Operating Displays And Connections

    Flashing slowly ADSL Flashing quickly Online Status The Gigaset SX541 WLAN dsl is powered on. The Gigaset SX541 WLAN dsl is powered off. The DSL line is connected and the ADSL port is opera- tional. The DSL line is being synchronised.

  • Page 20: Back Panel

    A device is connected to the relevant LAN port. The LAN port is sending or receiving data (traffic). There is no device connected. A device is connected to the Gigaset SX541 WLAN dsl via the USB port. There is no device connected.

  • Page 21: Setting Up The Gigaset Sx541 Wlan Dsl

    Do not position the device in the immediate vicinity of stereo equipment, TV sets or microwave ovens. This may cause interference. Position the Gigaset SX541 WLAN dsl so that it is as near to the centre of your wire- less network as possible. Make sure that where you position the Gigaset SX541 WLAN dsl provides optimum reception throughout the house or office.

  • Page 22: Connecting The Gigaset Sx541 Wlan Dsl

    SSID as the Gigaset SX541 WLAN dsl. It can take a few seconds for the wireless connection to be established. The WLAN LED flashes when data is sent or received via this connection.

  • Page 23: Configuring The Local Network

    PCs that will communicate with each other via the Gigaset SX541 WLAN dsl. In this chapter we assume that you will use the Gigaset SX541 WLAN dsl's This means that the IP addresses are automatically assigned to the PCs addresses).

  • Page 24: Configuring The Network

    Configuring the Local Network Configuring the Network Please remember: Make sure that the Use Windows to configure the settings function is deactivated. This can be done as follows: ì Click Start – Settings – Control Panel – Network Connections – LAN or High- Speed Internet.
  • Page 25 You will be prompted to select a connection method. ì Select Other Method and confirm with Next. You will now see a screen listing various connection methods. ì Select This computer connects directly to the Internet. The other computers on my network connect to the Internet through this computer and click Next.

  • Page 26: Selecting A Computer Name And Workgroup

    Configuring the Local Network Selecting a Computer Name and Workgroup You now have to specify a name for the PC and assign it to a workgroup. ì Enter the name the PC is to appear under in the network.This name must be unique within the network.

  • Page 27: Tcp/Ip Settings

    TCP/IP Settings TCP/IP Protocol requires certain settings which you should now make or check so that it can function smoothly. ì Click Start – Settings – Control Panel. ì Select Network Connections. Configuring the Local Network...
  • Page 28 Configuring the Local Network ì Double-click the LAN connection with which you are connected to the Gigaset SX541 WLAN dsl. ì Click Properties.
  • Page 29 ì Select Internet protocol (TCP/IP) and click Properties. ì If the Obtain IP address automatically and Obtain DNS server address automat- ically options have already been activated, your PC is already configured for DHCP. Click Cancel and close the following windows with OK to save your network config- uration.

  • Page 30: Deactivating The Http Proxy

    Deactivating the HTTP Proxy Make sure that the HTTP Proxy be deactivated so that your Web browser can access your Gigaset SX541 WLAN dsl's con- figuration pages. The following section describes the procedure for Internet Explorer and Mozilla Firefox. First decide which browser you are using and then follow the appropriate steps.

  • Page 31: Synchronising Tcp/Ip Settings With The Gigaset Sx541 Wlan Dsl

    ì Then enter the ipconfig /renew command and press the ENTER key. If the default IP address (192.168.2.1) of the Gigaset SX541 WLAN dsl was not changed, the IP address should now read 192.168.2.x (with x being a number between 2 and 255). The Subnet Mask must always be 255.255.255.0 and the Standard Gateway must have the IP address of the Gigaset SX541 WLAN dsl (192.168.2.1).

  • Page 32: Network Configuration With Windows 2000

    Network Configuration with Windows 2000 To integrate a PC with Windows 2000 into a network that is configured with a Gigaset SX541 WLAN dsl, you must carry out the following steps: 1. Install the network services (see below). 2. Select computer names and workgroup (see page 31).

  • Page 33: Selecting A Computer Name And Workgroup

    ì In the left-hand pane click Add Network Components. ì Now select Networking Services and click Next. ì You will now be prompted to insert the Windows installation CD. Insert the WIN2000 CD and click OK to install all the required components. Selecting a Computer Name and Workgroup You now have to specify a name for the PC and assign it to a workgroup.

  • Page 34: Installing The Tcp/Ip Protocol

    Configuring the Local Network Installing the TCP/IP Protocol TCP/IP protocol ensures that the PCs in the network can communicate with each other. You now have to install this Protocol. ì Right click to open the LAN connection. ì In the next window click Properties.
  • Page 35 ì Click Install. ì Now select Protocol and click Add. ì In the Network Protocol list, select Internet Protocol (TCP/IP). ì Click OK. The TCP/IP protocol is now shown in the Local Area Connection Properties win- dow. Configuring the Local Network...

  • Page 36: Tcp/Ip Settings

    Configuring the Local Network TCP/IP Settings The TCP/IP protocol requires certain settings which you should now make or check so that it can function smoothly.
  • Page 37 ì Select Internet Protocol (TCP/IP) and click Properties. ì If the Obtain IP address automatically and Obtain DNS server address automat- ically options have already been activated, your PC is already configured for DHCP. Click Cancel and close the following windows with OK to save your network config- uration.

  • Page 38: Deactivating The Http Proxy

    Deactivating the HTTP Proxy Make sure that the HTTP Proxy be deactivated so that your Web browser can read your Gigaset SX541 WLAN dsl's con- figuration pages. The following section describes the procedure for Internet Explorer and Mozilla Firefox. First decide which browser you are using and then follow the appropriate steps.

  • Page 39: Synchronising The Tcp/Ip Settings With The Gigaset Sx541 Wlan Dsl

    You have now configured your PC so that it is ready to be connected to the Gigaset SX541 WLAN dsl. You now have to release the old TCP/IP settings and synchronise them with the settings of your Gigaset SX541 WLAN dsl.

  • Page 40: Network Configuration With Windows 98 Se, Me

    4. Make TCP/IP protocol settings (see page 41). 5. Deactivate the http proxy (see page 45). 6. Synchronise the TCP/IP settings with the Gigaset SX541 WLAN dsl (see page 46). Setting up a PC as a Client for Microsoft Networks Before the PCs in your network can work together, you have to configure them as a Microsoft network Client.

  • Page 41: Selecting A Computer Name And Workgroup

    ì Select Client as the network component type and click Add. ì Under Manufacturer select Microsoft and under Network Clients select Client for Microsoft Networks. ì Confirm this with OK. Selecting a Computer Name and Workgroup You now have to specify a name for the PC and assign it to a workgroup. ì...

  • Page 42: Installing The Tcp/Ip Protocol

    Installing the TCP/IP Protocol TCP/IP protocol ensures that the PCs in the network can communicate with each other. You must install this connection with the Gigaset SX541 WLAN dsl. ì In the Network window, change from the Identification tab to Configuration. ì...

  • Page 43: Making Tcp/Ip Settings

    Making TCP/IP Settings The TCP/IP protocol requires certain settings which you should now make so that it can function smoothly. ì In the Network window, change to the Configuration tab. ì Select the TCP/IP > entry for your network card. ì...
  • Page 44 Configuring the Local Network ì Open the IP Address tab. ì If Obtain IP address automatically has already been activated, your PC is already configured for DHCP. Click Cancel and close the following windows with OK to start your network configuration. You may be prompted to insert your Windows Installation CD.
  • Page 45 Configuring the Local Network ì Open the DNS Configuration tab.
  • Page 46 Configuring the Local Network ì Select Disable DNS. ì Click OK. ì Finish the network configuration with OK. You may be prompted to insert your Windows Installation CD. Follow the instruc- tions in the installation procedure. Once the copying procedure is completed, you will be prompted to reboot your sys- tem.

  • Page 47: Deactivating The Http Proxy

    Deactivating the HTTP Proxy Make sure that the HTTP Proxy be deactivated so that your Web browser can access your Gigaset SX541 WLAN dsl's con- figuration pages. The following section describes the procedure for Internet Explorer and Mozilla Firefox. First decide which browser you are using and then follow the appropriate steps.

  • Page 48: Synchronising The Tcp/Ip Settings With The Gigaset Sx541 Wlan Dsl

    ì Click Release and then on Update. If the default IP address (192.168.2.1) of the Gigaset SX541 WLAN dsl was not changed, the IP address should now read 192.168.2.x (with x being a number between 2 and 255). The Subnet Mask must always be 255.255.255.0 and the Standard Gateway must have the IP address of the Gigaset SX541 WLAN dsl (192.168.2.1).

  • Page 49: Checking The Connection To The Gigaset Sx541 Wlan Dsl

    If the command does not return any statistics, but ends with a time-out, this means that the components cannot communicate with each other. Check the following points: 1. Is the Ethernet cable between the Gigaset SX541 WLAN dsl and the PC correctly con- nected or is there a wireless connection via a wireless network adapter? The LED display for the LAN connections on the Gigaset SX541 WLAN dsl and link display for the network card in your PC must be illuminated.

  • Page 50: The User Interface

    Once you have configured the network settings on a PC in your local network, you can then use that PC to configure the Gigaset SX541 WLAN dsl with the Gigaset SX541 WLAN dsl's user interface. You can use any browser for the configuration, for example Microsoft Internet Explorer 6.0 or higher, Mozilla Firefox 1.0 or higher.

  • Page 51: The Start Screen

    For the initial configuration you can skip this information. If you carry out all the basic and security settings using the wizard as described below, then your device and network are fully protected. If not, the next time you log on you will be informed of security gaps in the configuration program.
  • Page 52 Security Setup Wizard This wizard allows you to take precautions against unauthor- ised access to your Gigaset SX541 WLAN dsl and the local net- work. For example, you can assign a password and set up encryption for wireless traffic. This is described from page 59.

  • Page 53: Selecting A Language

    Selecting a Language The user interface can be presented in various languages. ì Click Language on the top right of the screen. ì If you wish to change the preset language, select the required language from the list. ì Click OK to apply the setting. You might have to load the file for the language you require.

  • Page 54: Elements On The User Interface

    Next > at the bottom of the screen. The < Back button returns you to the previous configuration step and Cancel returns you to the start screen. Buttons in the Advanced Settings menu Transfers the settings you have made to the Gigaset SX541 WLAN dsl configuration. Cancel Deletes all the entries in a screen since the last time you clicked on OK.

  • Page 55: Basic Setup Wizard

    Basic Setup Wizard The Basic Setup Wizard guides you step by step through the general configuration of the Gigaset SX541 WLAN dsl. This includes settings for your region and for your Internet access. Connection to the Internet is established via the Gigaset SX541 WLAN dsl for all PCs con- nected to it.

  • Page 56: Regional Options

    Basic Setup Wizard Regional Options You can select your present location for the regional settings on this screen. ì Select the country where you are currently located from the list. You can make the settings for the clock to change automatically to summer time and/or to the time zone as you wish.

  • Page 57: Configuring Internet Connections

    Configuring Internet Connections You will find the access data you need for configuring the Internet connection in the documentation received from your ì Select the option Other from the Service provider selection menu. ì Enter the data you have been given by your Internet provider: Protocol, User name and Password.
  • Page 58 Basic Setup Wizard Please remember: Connection to the Internet is only possible if you have entered all the data for your Internet provider correctly. ì Select how Internet sessions are to be established via Connection mode: – Select Always on if the connection is to exist at all times when the Gigaset SX541 WLAN dsl is switched on.

  • Page 59: Telephony

    Telephony You will find the access data you need for configuring the Internet telephony (VoIP) in the documentation received from your service provider. ì Select On for VoIP account, if you want to use Internet telephony (default setting). ì Select Other from the Service provider selection menu (default setting). ì...

  • Page 60: Summary

    You will then be taken automatically to the start screen for the Security Setup Wizard. If you want to carry this out at a later stage, deactivate the option I would like to run the Security Setup Wizard now. The Gigaset SX541 WLAN dsl is now configured and ready to connect to the Internet.

  • Page 61: Security Settings

    PCs (see page 75). The Gigaset SX541 WLAN dsl's user interface will guide you through the security config- uration step by step. Once you have completed a screen, click Next >. If you want to make any changes or check your entries, click <...

  • Page 62: Assigning A Password

    In the first step of the setup you can change the password for the user interface. When supplied, the configuration of your Gigaset SX541 WLAN dsl is protected with the pass- word admin. To prevent unauthorised changes to the configuration, you should change this password from time to time.

  • Page 63: Ssid

    SSID and deactivate SSID broadcast. If this option is enabled, the Gigaset SX541 WLAN dsl will send the SSID in all data trans- missions and your Gigaset SX541 WLAN dsl's SSID will be displayed on PCs that have a wireless network adapter.

  • Page 64: Setting Security Functions For The Wireless Network

    LAN. The Gigaset SX541 WLAN dsl makes use of effective encryption methods to prevent unauthorised eavesdropping as far as possible. You can use the following security mechanisms:...

  • Page 65: Wpa2 / Wpa With Pre-Shared Key (Psk)

    WPA2 / WPA with Pre-Shared Key (PSK) is a more advanced procedure than WEP for protecting wireless networks. Dynamic keys based on TKIP (Temporal Key Integration Protocol) offer increased security. The new standard WPA2 uses AES for the encryption. WPA-PSK is a special WPA mode for users at home and in small companies without a company authentication server.

  • Page 66: Wep Encryption

    You can choose either the standard 64-bit key or the more robust 128-bit key for encryp- tion. The keys are generated in hexadecimal or in ASCII format. You must use the same keys for encryption and decryption for the Gigaset SX541 WLAN dsl and all your wireless network adapters.
  • Page 67 When you have concluded the Security Setup Wizard, you must change the WEP encryption on the wireless network adapters for the connected PCs in the same way as they will not otherwise be given access to the Gigaset SX541 WLAN dsl's wireless network.

  • Page 68: Access Control Within The Wireless Network

    Security Settings Access Control Within the Wireless Network you can specify which PCs will have wireless access to the Gigaset SX541 WLAN dsl and hence to your LAN in this step. The access control is based on the PCs' network adapters. You can enter the MAC addresses for the PCs manually or select them from the list of PCs that are currently logged in.

  • Page 69: Saving Settings

    Gigaset SX541 WLAN dsl. Otherwise you will no longer be able to access the user interface and a corresponding error message will be shown. If, by mistake, you have denied all PCs access to the Gigaset SX541 WLAN dsl, you have two choices: You can completely reset the Gigaset SX541 WLAN dsl (see page 18).

  • Page 70: Configuring The Advanced Settings

    (see page 120), set the time (see page 119), or activate remote management (see page 121). You can also back up the data on your Gigaset SX541 WLAN dsl or load new firmware (see page 123).

  • Page 71: Internet

    Internet If you have configured your Gigaset SX541 WLAN dsl using the two wizards, you have also already configured the these settings in the Internet menu. This menu also offers you a wide range of possibilities for security settings and limiting access to the Internet as well as for providing your own services on the Internet.

  • Page 72: Internet Connection

    Configuring the Advanced Settings ì Select the appropriate option to select or deselect the Internet function of the Gigaset SX541 WLAN dsl. You can edit the displayed virtual connection or add a new connection. ì Enter the new parameters in the VPI / VCI fields.
  • Page 73 ì Select Other from the Service provider selection menu. ì Enter the data you have been given by your Internet provider: Protocol, User name and Password. Leave the default settings for the parameters IP address type, Host name, MTU, Line mode, Encapsulation, QoS class and VPI / VCI unless you have been given other data by your service provider.
  • Page 74 Configuring the Advanced Settings – Select Connect on demand if applications such as a Web browser or an e-mail program are to connect to the Internet automatically. – In the Idle time before disconnect field, enter a period of time after which the Internet connection is to be automatically ended if no data is transmitted (default setting: 3 minutes).
  • Page 75 Internet. You will see a symbol for your Gigaset SX541 WLAN dsl on the task bar on the PC on which UPnP is installed. Windows XP systems will also include the icon under network connections.

  • Page 76: Dns Server

    Configuring the Advanced Settings DNS Server DNS is a decentralised service which assigns PC names or Internet addresses names) and IP addresses to one another. A DNS server has to administer this information for each server or each LAN with an Internet connection. Normally your Internet provider provides you with a assignment when connection is set up to the Internet.

  • Page 77: Mac Address

    If you had Internet access through the same Internet provider before connecting the Gigaset SX541 WLAN dsl, then it is possible that the MAC address of one of your PCs has been used for registration when the connection was being set up. You must then either replace the current MAC address with the MAC address registered with the Internet pro- vider or ask your Internet provider to register a new MAC address for your account.

  • Page 78: Traffic Control

    PCs. Note: Traffic control is only possible if the Internet connection is established directly through the Gigaset SX541 WLAN dsl and not via a PC or a different router. ì In the Advanced Settings – Internet menu, select Traffic Control.
  • Page 79 Global time limit ì Activate or deactivate the time limit available to all users in your network for surfing the Internet each month. This makes sense if your Internet tariff is time-based. ì Enter the total amount of time available per month in hours. Global volume limit ì...

  • Page 80: Firewall

    Click OK to apply the settings. Attack Detection If the firewall functions of your Gigaset SX541 WLAN dsl are activated, the device mon- itors and limits the access of incoming traffic via the DSL connection with a function called Stateful Packet Inspection (SPI). This allows the Gigaset SX541 WLAN dsl to iden- tify and prevent certain types of attack from the Internet, such as Denial-of-Service (DoS).
  • Page 81 You can use the Attack Detection function to change the standard firewall settings and arrange to be notified by email about any attempted hacker attacks. ì In the Advanced Settings – Internet – Firewall menu, select Attack Detection. ì Select the security level for the firewall: –...
  • Page 82 Configuring the Advanced Settings E-mail notification of a hacker attack You can choose to be informed by e-mail about a possible hacker attack. ì Enter the following in the dialogue fields: – Select the Notification interval, i.e. at what intervals you wish to be informed about hacker attacks.

  • Page 83: Setting Up Access Control To The Internet

    Stateful Packet Inspection Your device monitors and limits the access of incoming traffic from the Internet with SPI (Stateful Packet Inspection). This allows it to identify and block certain types of attack such as Denial-of-Service (DoS). A typical DoS attack involves a remote com- puter paralysing a system and announcing that it is acting for the paralysed device in order to receive the data meant for it.
  • Page 84 Configuring the Advanced Settings You have the following setting options for Access Control: URL filter The URL filter allows you to block access to certain Internet sites or Internet domains. Once you have entered the relevant URLs, you can then create access rules that apply the URL filter for the selected clients in your network.
  • Page 85 ì Select the Access rule type from the list: – Apply to all clients: The rule applies to all PCs in your network. – Specify IP address range: You select the PCs to which the rule is to apply by entering an IP address block.
  • Page 86 Configuring the Advanced Settings – Click Delete to delete an entry. Click Add to create a new entry with the entered data or for the selected, predefined application. ì Click OK to apply the settings. Schedule Rules If you have set up an access rule (see page 82) for certain services in the Internet, you can control it by means of a schedule rule.

  • Page 87: Setting Up The Nat Function

    Port triggering is a specific variant of port forwarding. Unlike port forwarding, in this case the Gigaset SX541 WLAN dsl forwards data from the set port block to the PC that has previously sent data to the Internet via a certain port (trigger port). This means that approval for the data transfer is not tied to one specific PC in your network, rather to the port numbers of the required Internet service.
  • Page 88 You can use the NAT settings for the Gigaset SX541 WLAN dsl to set up port triggering for special applications (see page 87), set up the Gigaset SX541 WLAN dsl as a virtual server by configuring Port Forward- ing (see page 88), open the firewall for selected PCs (see page 89).

  • Page 89: Port Triggering

    Port Triggering If you configure port triggering for a certain application, you need to identify a so-called trigger port and the protocol (TCP or UDP) this port uses. You then assign the public ports that have to be opened for the application to this trigger port. You can select known Internet services for this or assign ports or blocks of ports manu- ally.

  • Page 90: Port Forwarding

    Apply the settings by clicking OK. Port Forwarding If you configure Port Forwarding, the Gigaset SX541 WLAN dsl outwardly assumes the role of the servers. It receives requests from remote users under its public IP address and automatically redirects them to local PCs. The private IP addresses of the servers in the local network remain protected.

  • Page 91: Opening The Firewall For Selected Pcs (Exposed Host)

    Example: the Web server has been configured to react to requests on port 8080. However, the requests from ripostes enter by port 80 (standard value). If you add the PC to the forwarding table and define port 80 as the public port and port 8080 as an internal port, all requests from the Internet are diverted to the service with the port number 80 on the Web server of the PC you have defined with port 8080.

  • Page 92: Dynamic Dns

    This is handled by the dynamic DNS service (DynDNS). You can use the DynDNS service to assign your Gigaset SX541 WLAN dsl an individual static domain name on the Internet even if it does not have a static IP address.
  • Page 93 If you have activated the device's DynDNS function, it will monitor its public IP address. When this changes, it will open a connection to DynDNS.org and update its IP address there. Please remember: You have to open an account with DynDNS.org before you can use the Gigaset SX541 WLAN dsl's DynDNS function.

  • Page 94: Qos (Quality Of Service)

    Configuring the Advanced Settings QoS (Quality of Service) Many communication and multimedia applications require high speed and large band- widths to transfer data between the local network and the Internet. However, for many applications there is often only one Internet connection available with limited capacity. QoS (Quality of Service) divides this capacity between the different applications and provides undelayed, continuous data transfer where data packets with higher priority are given transmission preference.

  • Page 95: Lan Configuration

    SX541 WLAN dsl can be reached from outside is assigned by the Internet service pro- vider. ì If you want to assign the Gigaset SX541 WLAN dsl a different IP address, enter it in the fields next to IP address. ì...

  • Page 96: Assigning Static Ip Addresses To Individual Pcs

    WLAN dsl. Please remember: If the DHCP server for the Gigaset SX541 WLAN dsl is activated, you can configure the network setting on the PC so that the Obtain an IP address automatically option is set. To find out how to do this, please read Section "Configuring the Local Network"...

  • Page 97: Configuring Wireless Connections

    Configuring Wireless Connections If PCs are communicating wirelessly via the Gigaset SX541 WLAN dsl, you should also take steps to enhance the security of your wireless network. You make this configura- tion via the Advanced Settings – Wireless Network menu. Here you can...
  • Page 98 SSID on them as well. SSID broadcast If this option is enabled (default setting), the Gigaset SX541 WLAN dsl will send the SSID in all data transmissions and your Gigaset SX541 WLAN dsl's SSID will be displayed on PCs that have a wireless network adapter.

  • Page 99: Setting Wireless Security

    Setting Wireless Security If you are sending data over wireless channels, we recommend that you activate encryp- tion (WEP or WPA) on your wireless network components. WPA offers greater security than WEP. We therefore recommend that you choose WPA encryption if it is supported by all components in your wireless network.

  • Page 100: Wpa2-Psk And Wpa2-Psk / Wpa-Psk

    Configuring the Advanced Settings WPA2-PSK and WPA2-PSK / WPA-PSK WPA with Pre-shared Key (WPA-PSK) WPA-PSK is a special WPA mode that provides encryption protection for users at home and in small companies without a company authentication server. Encryption keys are automatically generated with the Pre-shared Key and automatically changed (rekey- ing) and authenticated between the devices after a certain period of time val).
  • Page 101 WPA and WPA2 with authentication server In large networks (for example in companies), WPA enables the use of an additional authentication service. In this case, user access is controlled by user accounts and pass- words, in addition to WPA encryption. A RADIUS server acts as an authentication server. You can select the new WPA2 standard if this is supported by all components in your wireless network, or select WPA2 / WPA if you are using devices that only support WPA.

  • Page 102: Wep Encryption

    You can choose either the standard 64-bit key or the more robust 128-bit key for encryp- tion. The keys are generated in hexadecimal or in ASCII format. You must use the same keys for encryption and decryption for both the Gigaset SX541 WLAN dsl and all your wireless network adapters.

  • Page 103: Manual Key Entry

    Manual key entry ì Select the Key type, Hex or ASCII. If you select Hex, you can use the characters 0 to 9 and A to F. – With a 64-bit encryption depth, the key is exactly 10 characters long. An example of a valid key: 1234567ABC –...

  • Page 104: Allowed Clients

    Click OK to apply the settings. Allowed Clients You can specify the PCs that are to have wireless access to the Gigaset SX541 WLAN dsl and hence to your LAN on this screen. In the Wireless Network menu, select Allowed Clients.The default setting for access control is disabled.

  • Page 105: Repeater Function (Wds)

    Gigaset SX541 WLAN dsl. Otherwise you will no longer be able to access the user interface and a corresponding error message will be shown. If, by mistake, you have denied all PCs access to the Gigaset SX541 WLAN dsl, you have two choices: You can completely reset the Gigaset SX541 WLAN dsl (see page 18).

  • Page 106: Setting Up Internet Telephony (Voip)

    Apply the settings by clicking OK. Setting up Internet telephony (VoIP) Your Gigaset SX541 WLAN dsl enables you to make telephone calls via the Internet using an analogue phone connected to the Gigaset SX541 WLAN dsl. To do this, you require access authorisation from your service provider and the relevant access data.

  • Page 107: Voip Settings

    Internet provider. If there is a power failure, or if you have switched off the Gigaset SX541 WLAN dsl, you can only make calls using a phone connected to the Phone 1 socket. The dialing rules will not apply in this case.
  • Page 108 Configuring the Advanced Settings ì Select Other from the Service provider from the selection menu. ì Enter the data you have been given by your service provider: User name, Displayed name, Phone number, Password, SIP domain, SIP realm, Proxy server address and Registrar server address. ì...

  • Page 109: Extensions

    Extensions You can assign phone numbers to your extensions and make additional settings for Internet telephony, such as call waiting, display the caller's number and carry out other technical settings. ì Select Extensions in the Telephony menu. ì Select the Phone number (your service provider or fixed line) from the list for incoming and outgoing calls at extension 1.

  • Page 110: Dialing Plans

    Configuring the Advanced Settings ì If your service provider supports the function, you can have the caller's number dis- played via Display number of the caller (CLIP). ì Select Hide own number for outgoing calls (CLIR) if you want to hide the number of this extension for outgoing calls.
  • Page 111 ì Wait for dial tone on fixed line When you activate this option, the device is waiting with dialing for a fixed line call until the dial tone is recognized. Otherwise, the first digits of the number may be lost, because it lasts some time to change from Internet telephony to fixed line. ì...

  • Page 112: Quick Dial

    Configuring the Advanced Settings Quick dial Quick dial numbers or terms enable you to dial frequently used phone numbers quickly and easily. The quick dial number is a two-digit number (01 to 20). A vanity number is a combina- tion of letters you can enter instead of a phone number. You can specify a quick dial number and/or a vanity number for a phone number.

  • Page 113: Usb

    You can use your device's USB port to share a USB bulk memory or a USB printer with users in your local network and publish your data on the Internet. Note: The Gigaset SX541 WLAN dsl supports USB V1.1. Devices that support USB V2.0 may be connected too. ì...

  • Page 114: File Server

    USB bulk memory (for example USB stick or USB hard disk) available to all users in your local network. ì Connect a USB data carrier to the Gigaset SX541 WLAN dsl via the USB port. Note: The USB interface of the Gigaset SX541 WLAN dsl supplies 480 mA of power.
  • Page 115 ì Enter the name of the Domain / workgroup (workgroup is the standard name for Windows) in which the file server is located. If you now search your network you will find the file server within the stated domain / workgroup in the network environ- ment.
  • Page 116 Configuring the Advanced Settings Setting up or editing a share ì Enter a name for the Share. ì Select the directory you wish to release for sharing. You can enter the complete path for the directory manually or click the Browse button. A file menu is opened. You can now set access protection for the directory.

  • Page 117: Web Server

    DNS (see page 90) in addition. ì Connect a USB data carrier to the Gigaset SX541 WLAN dsl via the USB port. You can check the status of the connection to the USB bulk memory on the Advanced Settings –...
  • Page 118 Configuring the Advanced Settings HTTP HTTP (Hypertext Transfer Protocol) is the standard protocol for transferring data on the Internet. You can use it, for example, to publish your own homepage on the Internet. ì Activate the HTTP service for your Web server. ì...

  • Page 119: Print Server

    Print Server Your device's integrated printer server allows you to offer a USB printer to all users in your local network. Note: At present, the printer server can only be used with selected printers. You can obtain further information by contacting the hotline or else on the Internet (see Quick Start Guide).

  • Page 120: Administration And Status Information

    (see page 121), save and, if necessary, restore configuration data (see page 123), reset the Gigaset SX541 WLAN dsl to the factory settings (see page 124), reboot the device (see page 124), update the firmware (see page 125),...

  • Page 121: Regional Options

    Regional Options To operate your Gigaset SX541 WLAN dsl, you can select the location, time zone and the format for entering the date and time, as well as configure the application for a time server for the Internet time. ì...

  • Page 122: Internet Time

    Click OK to apply the settings. System Password You can assign a System Password for the configuration environment of your Gigaset SX541 WLAN dsl and specify the period after which a session is to end automat- ically if no further entry is made. ì...

  • Page 123: Setting Up Remote Management

    Remote Management enables a PC that is not in your local network to be used to con- figure the Gigaset SX541 WLAN dsl with a standard Web browser. You can permit Remote Management for one particular PC or for any PCs.
  • Page 124 Remote Management for one particular PC: ì In the Authorized client field, enter the IP address of the PC that is to have access to the user interface of the Gigaset SX541 WLAN dsl from outside your local net- work. Please remember: The Internet provider might assign the IP address to the PC dynamically.

  • Page 125: Saving And Restoring A Configuration

    Saving and Restoring a Configuration Once you have configured your Gigaset SX541 WLAN dsl, it is advisable to back up the settings. You can then restore them at any time, should they be accidentally deleted or overwritten. You can also reset the configuration to the factory settings. You should always do this before passing your device on to any outsiders.

  • Page 126: Restoring The Back-Up

    This means that you will have to completely reconfigure the Gigaset SX541 WLAN dsl. Reboot You can restart your Gigaset SX541 WLAN dsl if it is not working properly. It should then be ready for use again. In the Administration menu, select Reboot.

  • Page 127: Updating Firmware

    Updating Firmware If Siemens or your Internet provider make a new version of the firmware available, you can update the firmware of the Gigaset SX541 WLAN dsl. To do this, you must first download the new firmware into your PC.

  • Page 128: System Log

    Administration and Status Information System Log The System Log is displayed in the Status – Device menu. It can give you important information about the functioning of your device and possible problems. You can also have this information transmitted automatically to a system log server. ì...

  • Page 129: Status Information

    You can view information about the configuration and status of the Gigaset SX541 WLAN dsl in the Status menu of the Gigaset SX541 WLAN dsl. You will see an overview of the status of the Internet connection, the local and wireless network and of the device on the first screen.
  • Page 130 Status Information Internet Connection status The status of the connection to the Internet and, if connected, the duration of the connection. IP address The public IP address of your device. Local network IP address The local IP address of your device. DHCP Server The status of the DHCP server for your device and, if activated, the number of clients in your network to which an IP address has been assigned.

  • Page 131: Security

    Security On the Security screen in the Status menu you will see information about possible security risks for your device and your network. System password not changed Your device's configuration program is not effectively protected against unauthor- ised access, as you have either not changed the password since setting the device up or you have not assigned any password at all.
  • Page 132 Status Information Firewall for your Internet connection turned off Your network is not protected against hackers making unauthorised access from the Internet. The section entitled "Firewall" on page 78 describes how to avoid this secu- rity risk. Address translation for your Internet connection turned off The clients in your network are not protected against unauthorised access from the Internet.

  • Page 133: Internet

    Internet On the Internet screen in the Status menu, you will find information about the status of your device's Internet connection. Connection status Shows the status of the connection to the Internet and, if connected, the duration of the connection. If you have set Connect on demand or Connect manually as the connection mode (see page 70), you can Connect or Disconnect the connection to the Internet manually here.
  • Page 134 Status Information Preferred DNS server Shows the IP address of the preferred DNS server used for the current Internet con- nection. Alternate DNS server Shows the IP address of the alternative DNS server used for the current Internet con- nection. Downstream rate Shows the transmission rate of the current Internet connection for downloads from the Internet.

  • Page 135: Traffic Control

    Traffic Control You will see information about limits and the time and data volume currently available for your Internet connection in the Status menu on the Traffic Control screen. ì Click Refresh to refresh this screen and update the displayed data. Global traffic limits –...

  • Page 136: Local Network

    Status Information Local Network You will find information about the settings for your local network in the Status menu on the Local Network screen. IP address Shows the local IP address of your device. Subnet mask Shows the subnet mask used in the local network. MAC address Shows the local MAC address of your device for wired data transmission.

  • Page 137: Wireless Network

    Wireless Network You will find information about the settings for your wireless network in the Status menu on the Wireless Network screen. Status Shows the status of the connection between your device and the wireless network. SSID Shows the identification of your wireless network. Channel Shows the radio channel currently used for transmitting data within your wireless network.

  • Page 138: Telephony

    Status Information Repeater (WDS) – Status Shows the status of the WDS (Wireless Distribution System) in your wireless net- work for increasing the range. – WDS links Shows the current number of existing connections to other access points or repeaters in your wireless network. ì...

  • Page 139: Device

    Device You will find information about the most important data for your device in the Status menu on the Device screen. System uptime Shows your device's operating time since the last time the system was started. System time Shows the system time for your device. Firmware version Shows the version of the firmware currently installed in your device.
  • Page 140 Status Information Serial number Shows your device's serial number. System Log The system log can give you important information about the functioning of your device and possible problems. You can adjust the scope of the system log to suit your needs (see the section entitled "System Log"...

  • Page 141: Installing The Printer Port For Network Printers

    The print job you send to the PC on which the printer depends reduces the perform- ance (resources) of this PC. If you use the USB port on the Gigaset SX541 WLAN dsl for your printer, you have all the advantages of a network printer without the disadvantages referred to above: The network, and consequently also the printer, is always ready (the Gigaset SX541 WLAN dsl and the printer itself must be switched on, of course).

  • Page 142: Installing A Standard Tcp/Ip Printer Port Under Windows Xp/2000

    Gigaset SX541 WLAN dsl is connected and can be reached in the network. A printer need not be connected to the USB port on your Gigaset SX541 WLAN dsl at this point. The following illustrations show installation on Windows XP. Installation on Win- dows 2000 is essentially the same.
  • Page 143 ì In the printer wizard, click Next. The printer port you are installing will behave like an additional parallel connection to the PC. For this reason, you must click the option button next to Local printer in this window. The check box below should not be ticked in the square Plug & Play printer. If there is a tick present, click the box to remove it.
  • Page 144 Installing the Printer Port for Network Printers ì Click the option button Create a new port. ì Then select Standard TCP/IP Port from the selection menu in the field next to it. ì Click Next. ì In the wizard for setting up a standard TCPI/IP port, click Next.
  • Page 145 ì In the Printer Name or IP Address input field, enter the IP address of the print server (Gigaset SX541 WLAN dsl): for example 192.168.2.1. Your input is shown repeated in the second field. ì Double click in the Port Name field and enter a name. This name will appear in the list of printer ports.
  • Page 146 Installing the Printer Port for Network Printers ì From the list of standard device types, select the offered type Network Print Server (1 port) (print server with a printer connection). ì Click Next. The window for finishing the wizard is opened and shows you all the settings you have made.
  • Page 147 If you do not wish to install a printer until later, click Cancel. Note: The Gigaset SX541 WLAN dsl's printer server does not work bidirectionally. It does not evaluate any of the printer's response messages. For this reason please make sure that your printer is also configured unidirectionally.

  • Page 148: Installing A Printer On The Tcp/Ip Port Retrospectively

    Installing the Printer Port for Network Printers Installing a Printer on the TCP/IP Port Retrospectively If you connect a printer to this port at a later time, start as described above for installing the printer port. ì In this case, however, you should click the selection menu in the Select a Printer Port window.

  • Page 149: Installing A Printer Driver Under Windows 98 Se Or Me

    Insert the CD-ROM included in the scope of delivery into the CD-ROM or DVD drive of your PC. ì Wait until the CD-ROM welcome window appears. ì Click Gigaset SX541 WLAN dsl. ì Click Printer port driver for Windows 98 SE or ME. The welcome window for installing the port driver is opened. ì...

  • Page 150: Instructions For Setting Up A Printer On The Pc

    Then continue to install the printer and finish the installation. Note: The Gigaset SX541 WLAN dsl's printer server does not work bidirectionally. It does not evaluate any of the printer's response messages. For this reason please make sure that your printer is also configured unidirectionally.

  • Page 151: Appendix

    Possible cause and solutions No power supply. ì Check whether the mains adapter is connected to the Gigaset SX541 WLAN dsl and a power outlet. ì Check whether the device is switched on. ì Check whether the power outlet and the mains adapter are working properly.
  • Page 152 If you do not know the key, you will have to reset the Gigaset SX541 WLAN dsl (see page 18). Warning: Please bear in mind that this will restore all the configuration settings to the factory set-...
  • Page 153 255.255.255.x. This means that the first three parts of the IP address on each PC and the Gigaset SX541 WLAN dsl have to be identical. The device also has to be configured as a DNS server. ì...

  • Page 154: Specifications

    Appendix Specifications Interfaces 1 DSL 4 LAN 1 USB 1 FXO 2 FXS WLAN Wireless properties Frequency range Spreading Modulation Number of channels Transmission rate Operating environment Temperature Humidity LED displays (green) Compliance with security conditions and regulations RJ11, Annex A (U-R2) RJ45, 10Base-T/100Base-TX, Autosensing, MDI/MDIX USB 1.1, for printer server or file server RJ11, for connecting to the analogue subscriber line...
  • Page 155 Appendix Browser-based configuration environment Software NAT, PPPoE, PPPoA DHCP server and client NAT, Port Forwarding, Port Triggering, Exposed Host Security Setup Firewall, prevention of hacker attacks MAC address filtering URL filtering, DoS blocking, SPI Log file WEP encryption WPA2 / WPA encryption...

  • Page 156: Open Source Software Used In The Product

    Your compliance with those license conditions will entitle you to use the Open Source Software as foreseen in the relevant license. In the event of conflicts between Siemens license conditions and the Open Source Software license conditions, the Open Source Software conditions shall prevail with respect to the Open Source Software portions of the software.

  • Page 157: Open Source Software Licenses

    Appendix Open Source Software Licenses GNU GENERAL PUBLIC LICENSE Version 2, June 1991 Copyright (C) 1989, 1991 Free Software Foundation, Inc. 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed. Preamble The licenses for most software are designed to take away your freedom to share and change it.
  • Page 158 Appendix GNU GENERAL PUBLIC LICENSE TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION 0. This License applies to any program or other work which contains a notice placed by the copy- right holder saying it may be distributed under the terms of this General Public License. The "Program", below, refers to any such program or work, and a "work based on the Program"...
  • Page 159 Appendix a) Accompany it with the complete corresponding machine-readable source code, which must be distributed under the terms of Sections 1 and 2 above on a medium customarily used for software interchange; or, b) Accompany it with a written offer, valid for at least three years, to give any third party, for a charge no more than your cost of physically performing source distribution, a complete machine- readable copy of the corresponding source code, to be distributed under the terms of Sections 1 and 2 above on a medium customarily used for software interchange;...
  • Page 160 Appendix integrity of the free software distribution system, which is implemented by public license practices. Many people have made generous contributions to the wide range of software distributed through that system in reliance on consistent application of that system; it is up to the author/donor to decide if he or she is willing to distribute software through any other system and a licensee cannot impose that choice.
  • Page 161 How to Apply These Terms to Your New Programs If you develop a new program, and you want it to be of the greatest possible use to the public, the best way to achieve this is to make it free software which everyone can redistribute and change under these terms.
  • Page 162 Appendix LGPL GNU LESSER GENERAL PUBLIC LICENSE Version 2.1, February 1999 Copyright (C) 1991, 1999 Free Software Foundation, Inc. 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed. [This is the first released version of the Lesser GPL.
  • Page 163 Appendix of freedom. The Lesser General Public License permits more lax criteria for linking other code with the library. We call this license the "Lesser" General Public License because it does Less to protect the user’s freedom than the ordinary General Public License. It also provides other free software developers Less of an advantage over competing non-free programs.
  • Page 164 Appendix this License and to the absence of any warranty; and distribute a copy of this License along with the Library. You may charge a fee for the physical act of transferring a copy, and you may at your option offer warranty protection in exchange for a fee.
  • Page 165 Appendix If distribution of object code is made by offering access to copy from a designated place, then offer- ing equivalent access to copy the source code from the same place satisfies the requirement to dis- tribute the source code, even though third parties are not compelled to copy the source along with the object code.
  • Page 166 Appendix For an executable, the required form of the "work that uses the Library" must include any data and utility programs needed for reproducing the executable from it. However, as a special exception, the materials to be distributed need not include anything that is normally distributed (in either source or binary form) with the major components (compiler, kernel, and so on) of the operating system on which the executable runs, unless that component itself accompanies the executable.
  • Page 167 Appendix This section is intended to make thoroughly clear what is believed to be a consequence of the rest of this License. 12. If the distribution and/or use of the Library is restricted in certain countries either by patents or by copyrighted interfaces, the original copyright holder who places the Library under this License may add an explicit geographical distribution limitation excluding those countries, so that distribu- tion is permitted only in or among countries not thus excluded.
  • Page 168 Appendix How to Apply These Terms to Your New Libraries If you develop a new library, and you want it to be of the greatest possible use to the public, we recommend making it free software that everyone can redistribute and change. You can do so by permitting redistribution under these terms (or, alternatively, under the terms of the ordinary Gen- eral Public License).
  • Page 169 Glossary Access Point An Access Point, such as the Gigaset SX541 WLAN dsl, is the centre of a wireless local network (WLAN). It handles the connection of the wireless linked network components and regulates the data traffic in the wireless network. The Access Point also serves as an...
  • Page 170 The Gigaset SX541 WLAN dsl includes a DHCP server and uses it to assign automatic IP addresses to PCs in the local network. You can specify that the IP addresses for certain PCs are never changed.
  • Page 171 DoS attack Denial of Service A DoS attack is a particular form of hacker attack directed at computers and networks with a connection to the Internet. The aim is not so much to steal data but to paralyse the computer or network so severely that the network resources are no longer available. A typical hacker attack involves making a remote computer announce that it is acting for the paralysed computer, for example, and receive the data meant for you.
  • Page 172 Glossary Firewall Firewalls are used by network operators as protection against unauthorised external access. This involves a whole bundle of hardware and software actions and technologies that monitor and control the data flow between the private network to be protected and an unprotected network such as the Internet.
  • Page 173 Internet computer to inform neighbouring Ad-hoc mode. have been created for exchanging data, and these are Domain names (for example siemens.com). Domain Internet (Voice over IP). TCP/IP protocols. It is responsible for addressing parties in a Glossary...
  • Page 174 A local network can be connected to other local networks or to a wide-area network (WAN) such as the Internet. With the Gigaset SX541 WLAN dsl, you can set up a wired local Ethernet network and a wireless IEEE 802.11g...
  • Page 175 Glossary Mbps Million bits per second Specification of the transmission speed in a network. MAC Encapsulated Routing Maximum Receive Unit The MRU defines the maximum user data volume within a data packet. Maximum Transmission Unit The MTU defines the maximum length of a data packet that can carried over the net- work at a time.
  • Page 176 (also known as the global IP address) is a network component's address on the Internet. It is assigned by the from a LAN to the Internet, such as the Gigaset SX541 WLAN dsl, have a public and a Private IP address.
  • Page 177 Glossary Rekey Interval The rekey interval is the period after which new keys are automatically generated for data encryption with WPA-PSK. Remote Management Remote Management refers to the ability to manage a network from a network compo- nent that is actually outside the local area network (LAN). Repeater A repeater extends the range of a wireless local area network by relaying data from the Access Point...
  • Page 178 The subnet mask in a network administered by the Gigaset SX541 WLAN dsl is always 255.255.255.0. That means the first three parts of the IP address form the network number and the final part is used for assigning computer numbers.
  • Page 179 Server provides a service on the Internet, that runs not on itself, but on another network component. The Gigaset SX541 WLAN dsl can be configured as a virtual server. It will then direct incoming calls for a service via Port Forwarding...
  • Page 180 WLAN is currently specified in Standard IEEE 802.11. The Gigaset SX541 WLAN dsl com- plies with Standard 802.11g. WPA was developed to improve the security provided by WEP. WPA uses complex proce- dures to generate keys, such as TKIP (Temporal Key Integrity Protocol). In addition, WPA can use an authentication server (for example a RADIUS server) to increase security.
  • Page 181 Index Numerics ..10/100 Mbps Switch Port ....128-bit encryption ... . 128-bit key .
  • Page 182 IP address protecting with password setting up Gigaset SX541 WLAN dsl ......reset Global IP address see...
  • Page 183 ..... Idle time ......IEEE .
  • Page 184 Index Maximum Receive Unit see MRU Maximum Transmission Unit see MTU ......Mbps ......
  • Page 185 ....Reboot function ....Regional settings ....Rekeying Releasing TCP/IP settings .
  • Page 186 Index Telephony ....basic settings ... . . hide own number ....hook flash time .
  • Page 187 Issued by Siemens Communications Haidenauplatz 1 D-81667 Munich © Siemens AG 2005 All rights reserved. Subject to availability. Rights of modification reserved. Siemens Aktiengesellschaft www.siemens.com/gigaset No.: A31008-M1025-L101-1-7619...

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